D-Branes and Spin^c Structures

Details D-Branes and Spin^c Structures D-Branes and Spin^c Structures

1998-12-09

arxiv.org/abs/hep-th/9812084v1

Phys.Lett. B450 (1999) 353-357

Physics

High Energy Physics

High Energy Physics - Theory

9 pages, LaTeX

Scientific paper

10.1016/S0370-2693(99)00161-6

It was recently pointed out by E. Witten that for a D-brane to consistently wrap a submanifold of some manifold, the normal bundle must admit a Spin^c structure. We examine this constraint in the case of type II string compactifications with vanishing cosmological constant, and argue that in all such cases, the normal bundle to a supersymmetric cycle is automatically Spin^c.

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